CN109858227B - Fingerprint input method and device, electronic equipment and storage medium - Google Patents
Fingerprint input method and device, electronic equipment and storage medium Download PDFInfo
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- CN109858227B CN109858227B CN201910107933.3A CN201910107933A CN109858227B CN 109858227 B CN109858227 B CN 109858227B CN 201910107933 A CN201910107933 A CN 201910107933A CN 109858227 B CN109858227 B CN 109858227B
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Abstract
The embodiment of the application discloses a fingerprint input method, a fingerprint input device, electronic equipment and a storage medium, wherein the method comprises the following steps: detecting a first fingerprint pressing operation in a fingerprint acquisition area of a touch display screen; acquiring a first fingerprint image generated in the first fingerprint pressing operation process through a fingerprint sensor under a screen; if the image quality of the first fingerprint image is smaller than a first preset threshold value, a second fingerprint image generated in the first fingerprint pressing operation process is collected again through the under-screen fingerprint sensor; and if the image quality of the second fingerprint image is greater than or equal to the first preset threshold value, recording the second fingerprint image. The success rate of fingerprint identification of the fingerprint sensor under the screen can be improved.
Description
Technical Field
The application relates to the technical field of terminals, in particular to a fingerprint input method and device, electronic equipment and a storage medium.
Background
With the widespread use of electronic devices (such as mobile phones, tablet computers, etc.), the functions of the electronic devices are becoming more and more powerful. The prior electronic equipment generally adopts a full screen, and the fingerprint identification under the full screen generally adopts the fingerprint identification under the screen. In the fingerprint input of comprehensive screen, if the finger lifts up immediately after the collection action is completed, the actually formed fingerprint picture may be fuzzy, the fingerprint picture lines which are successfully input are fuzzy, and the follow-up fingerprint identification has higher probability to be abnormal in matching, so that the success rate of fingerprint identification is low.
Disclosure of Invention
The embodiment of the application provides a fingerprint input method and device, electronic equipment and a storage medium, and the success rate of fingerprint identification of a fingerprint sensor under a screen can be improved.
In a first aspect, an embodiment of the present application provides a fingerprint entry method, including:
detecting a first fingerprint pressing operation in a fingerprint acquisition area of a touch display screen;
acquiring a first fingerprint image generated in the first fingerprint pressing operation process through a fingerprint sensor under a screen;
if the image quality of the first fingerprint image is smaller than a first preset threshold value, a second fingerprint image generated in the first fingerprint pressing operation process is collected again through the under-screen fingerprint sensor;
and if the image quality of the second fingerprint image is greater than or equal to the first preset threshold value, recording the second fingerprint image.
In a second aspect, an embodiment of the present application provides a fingerprint input device, the device is applied to an electronic device including a touch display screen and a fingerprint sensor under the screen, the touch display screen includes a fingerprint acquisition area, the fingerprint sensor under the screen is used for acquiring a fingerprint image in the fingerprint acquisition area, the device includes:
the detection unit is used for detecting a first fingerprint pressing operation in a fingerprint acquisition area of the touch display screen;
the acquisition unit is used for acquiring a first fingerprint image generated in the first fingerprint pressing operation process through the under-screen fingerprint sensor;
the acquisition unit is further used for acquiring a second fingerprint image generated in the first fingerprint pressing operation process again through the under-screen fingerprint sensor under the condition that the image quality of the first fingerprint image is smaller than a first preset threshold;
an entry unit, configured to enter the second fingerprint image when the image quality of the second fingerprint image is greater than or equal to the first preset threshold.
In a third aspect, an embodiment of the present application provides an electronic device, including a touch display screen, an off-screen fingerprint sensor, a processor, and a memory, where the memory is configured to store one or more programs, and the one or more programs are configured to be executed by the processor, where the programs include instructions for performing the steps in the first aspect of the embodiment of the present application.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the first aspect of the embodiment of the present application.
In a fifth aspect, embodiments of the present application provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, where the computer program is operable to cause a computer to perform some or all of the steps as described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package.
It can be seen that the fingerprint input method described in the embodiment of the present application is applied to an electronic device including a touch display screen and an off-screen fingerprint sensor, where the touch display screen includes a fingerprint acquisition area, and the off-screen fingerprint sensor is used to acquire a fingerprint image in the fingerprint acquisition area. The fingerprint input method comprises the following steps: detecting a first fingerprint pressing operation in a fingerprint acquisition area of a touch display screen; acquiring a first fingerprint image generated in the process of pressing a first fingerprint through a fingerprint sensor under a screen; if the image quality of the first fingerprint image is smaller than a first preset threshold value, a second fingerprint image generated in the first fingerprint pressing operation process is collected again through a fingerprint sensor under a screen; and if the image quality of the second fingerprint image is greater than or equal to a first preset threshold value, recording the second fingerprint image. In the embodiment of the application, in the process of inputting the fingerprint image, the fingerprint image can be collected twice under the condition of not lifting the finger, only the fingerprint image with the highest image quality is input, and the success rate of subsequent fingerprint identification can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application;
FIG. 2 is a schematic diagram of a position relationship between an off-screen fingerprint sensor and a fingerprint acquisition area according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of a fingerprint input method disclosed in an embodiment of the present application;
FIG. 4 is a schematic flow chart diagram of another fingerprint entry method disclosed in the embodiments of the present application;
fig. 5 is a schematic structural diagram of a fingerprint input device disclosed in an embodiment of the present application;
fig. 6 is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The electronic device according to the embodiment of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, which have wireless communication functions, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and the like. For convenience of description, the above-mentioned devices are collectively referred to as electronic devices.
The following describes embodiments of the present application in detail.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application, where the electronic device 100 includes a processor 101, a Memory 102, a signal processor 103, a communication interface 104, a touch display screen 105, a speaker 106, a microphone 107, a Random Access Memory (RAM) 108, a camera 109, a sensor 110, and the like.
The processor 101 may be an AP processor or another processor.
The memory 102, the signal processor 103, the touch display screen 105, the speaker 106, the microphone 107, the RAM108, the camera 109, and the sensor 110 are connected to the processor 101, and the communication interface 104 is connected to the signal processor 103.
The Touch display screen 105 includes a display screen and a Touch Panel (TP), and the Touch display screen 105 includes a fingerprint collection area. The fingerprint acquisition area is a piece of area in the touch display screen 105, i.e., a large area that is sized to be pressed by multiple fingers simultaneously, rather than a small area that can only be pressed by a single finger. The position of the fingerprint collection area may be a middle area of the touch display screen 105, an upper area of the touch display screen 105, a lower area of the touch display screen 105, and the like, which is not limited herein. The touch Display screen 105 may be an Organic Light-Emitting Diode (OLED) Display screen or a Liquid Crystal Display (LCD).
The sensor 110 includes a fingerprint sensor, an infrared sensor, a gyroscope, and the like. The fingerprint sensor may be an optical fingerprint sensor, which may also be referred to as an underscreen fingerprint sensor. The under-screen fingerprint sensor is used for collecting optical signals in a fingerprint collection area. The under-screen fingerprint sensor can be arranged below a fingerprint acquisition area, specifically please refer to fig. 2, and fig. 2 is a schematic diagram of a position relationship between the under-screen fingerprint sensor and the fingerprint acquisition area disclosed in the embodiment of the present application. As shown in fig. 2, the under-screen fingerprint sensor is located right below the fingerprint acquisition area, and the under-screen fingerprint sensor can acquire an optical signal at each position in the fingerprint acquisition area, and the area of the area that the under-screen fingerprint sensor can acquire is larger than or equal to the area of the fingerprint acquisition area.
In this embodiment, the processor 101 is configured to detect a first fingerprint pressing operation in a fingerprint collection area of a touch display screen; acquiring a first fingerprint image generated in the first fingerprint pressing operation process through a fingerprint sensor under a screen; under the condition that the image quality of the first fingerprint image is smaller than a first preset threshold value, a second fingerprint image generated in the first fingerprint pressing operation process is collected again through the under-screen fingerprint sensor; and recording the second fingerprint image when the image quality of the second fingerprint image is greater than or equal to the first preset threshold value.
In an implementation manner of the present application, the processor 101 is further configured to determine, when the image quality of the second fingerprint image is smaller than the first preset threshold, an image with the highest image quality in the first fingerprint image and the second fingerprint image; and recording the image with the highest image quality in the first fingerprint image and the second fingerprint image under the condition that the image quality of the fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is greater than or equal to a second preset threshold, wherein the second preset threshold is smaller than the first preset threshold.
In an implementation manner of the present application, the processor 101 is further configured to output a prompt message indicating that entry is failed when the image quality of a fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is less than a second preset threshold, where the prompt message is used to prompt the user to perform a pressing operation again.
In an implementation manner of the present application, the processor 101 is further configured to start a camera and collect face information when image qualities of N fingerprint images continuously collected by the underscreen fingerprint sensor are all lower than the second preset threshold, where N is an integer greater than or equal to 2; verifying whether the face information is matched with a prestored face template; and the fingerprint input module is also used for exiting the fingerprint input mode and entering the screen locking mode under the condition that the face information is not matched with the pre-stored face template.
In an implementation manner of the present application, the processor 101 is further configured to enter the first fingerprint image when the image quality of the first fingerprint image is greater than or equal to a first preset threshold.
In an implementation manner of the application, the processor 101 is further configured to detect a pressure value of the first fingerprint pressing operation before a second fingerprint image generated in the first fingerprint pressing operation process is re-acquired by the under-screen fingerprint sensor, and output prompt information for increasing the pressing degree when the pressure value is not within a preset pressure value interval and is less than a lower limit of the preset pressure value interval;
the processor 101 is further configured to output prompt information for reducing the pressing force degree when the pressure value is not within the preset pressure value interval and the pressure value is greater than the upper limit of the preset pressure value interval.
In an implementation manner of the present application, the image quality is determined based on a fingerprint coverage area and a number of effective fingerprint pixel points.
In the embodiment of the application, in the process of inputting the fingerprint image, the fingerprint image can be collected twice under the condition of not lifting the finger, only the fingerprint image with the highest image quality is input, and the success rate of subsequent fingerprint identification can be improved.
In the embodiment of the present application, the signal processor 103, the communication interface 104, the speaker 106, the microphone 107, the RAM108, and the camera 109 may be removed from the electronic device 100 as needed, and of course, other hardware modules may be added to the electronic device 100.
It should be noted that, for the specific implementation of the steps executed by each module, reference may be made to the following specific implementation of the method, and the description is not further provided here.
Based on the electronic device shown in fig. 1, a fingerprint entry method is disclosed, please refer to fig. 3, fig. 3 is a schematic flow chart of the fingerprint entry method disclosed in the embodiment of the present application, and as shown in fig. 3, the fingerprint entry method includes the following steps.
301, the electronic device detects a first fingerprint pressing operation within a fingerprint collection area of the touch display screen.
In the embodiment of the application, the operation is pressed to the fingerprint, which means that the fingerprint area of the finger is pressed in the fingerprint collection area of the touch display screen of the electronic device. Fingerprint area of finger is at the in-process that the fingerprint collection region pressed, and fingerprint image can be gathered to fingerprint sensor under the screen that is located the regional below of fingerprint collection. For the optical fingerprint sensor, the optical fingerprint sensor includes a light source and a detection device, and the detection device may be a charge-coupled device (CCD) array. The light source can launch incident light, and incident light takes place the reflection through the area of touch-control display screen surface with the finger contact, and reflected light is received and is converted into signal of telecommunication data by detection device, and optical fingerprint sensor can discern which incident light and the protruding department (the ridge of fingerprint) contact of fingerprint according to the total reflection principle, which incident optics and the sunken department (the valley of fingerprint) contact of fingerprint to gather and obtain optical fingerprint image.
Wherein the user may enter the system home interface before performing step 301. In the main interface of the system, the fingerprint can be input or added by clicking in the setting interface, so that the fingerprint acquisition area of the touch display screen can be lightened, a user is guided to press in the fingerprint acquisition area, the fingerprint is input, and the fingerprint input flow of the application is executed.
Optionally, the electronic device may detect a first fingerprint pressing operation in a fingerprint collection area of the touch display screen through the pressure sensor. The fingerprint acquisition area of the touch display screen can further comprise a pressure sensor, and the pressure sensor can sense the pressure of a finger of a user so as to detect whether pressing operation is generated.
Optionally, the electronic device may further detect, by the optical sensor, a first fingerprint pressing operation in the fingerprint collection area of the touch display screen. The touch control display screen comprises a fingerprint acquisition area, an optical sensor and a touch control display screen, wherein the optical sensor can be arranged below the fingerprint acquisition area of the touch control display screen and can detect whether pressing operation is generated according to the intensity of light reflected in the fingerprint acquisition area. It should be noted that the optical sensor may be a component of the underscreen fingerprint sensor, or may be a separately arranged sensor, which is not limited in the embodiment of the present application.
302, the electronic device collects a first fingerprint image generated in the process of pressing the first fingerprint through the under-screen fingerprint sensor.
In the embodiment of the application, when the user finger presses in the fingerprint collection area, the electronic equipment can detect the pressing operation, and then open fingerprint sensor under the screen, and the first fingerprint image that produces in the operation process is pressed to the first fingerprint of fingerprint sensor collection under the screen.
After the first fingerprint image is collected by the fingerprint sensor under the screen, the first fingerprint image can be given to a processor of the electronic equipment for processing and evaluating the quality of the first fingerprint image. Specifically, the quality of the first fingerprint image can be evaluated according to the fingerprint coverage area of the first fingerprint image and the number of effective fingerprint pixel points. The effective fingerprint pixel points refer to fingerprint pixel points which can be identified by the processor. When the finger has oil, sweat stain, water stain, spot, invalid fingerprint pixel can appear in the first fingerprint image of fingerprint sensor collection under the screen. The processor of the electronic device may be a processing unit in the fingerprint sensor under the screen, or may also be a central processing unit or a processor in the fingerprint module under the screen, which is specially used for processing the fingerprint image, and the embodiment of the application is not limited.
Generally speaking, the larger the fingerprint coverage area is, the more the number of effective fingerprint pixel points is, the higher the quality evaluation of the first fingerprint image is. The quality assessment of the first fingerprint image may be presented in the form of a quality score or in the form of a quality rating.
303, if the image quality of the first fingerprint image is smaller than a first preset threshold, the electronic device reacquires a second fingerprint image generated in the process of pressing the first fingerprint through the fingerprint sensor under the screen.
In the embodiment of the application, the first preset threshold is a requirement that the set relatively perfect fingerprint image with high quality can meet. Because the user is when typing in the fingerprint, direction, dynamics that the finger pressed, whether the finger has spot, the intensity of ambient light all can cause the influence to the image quality of the fingerprint image of fingerprint sensor collection under the screen. After the user presses once, the image quality of the fingerprint image collected by the fingerprint sensor under the screen may be better or worse.
If the image quality of the first fingerprint image is smaller than the first preset threshold value, it is indicated that the image quality of the first fingerprint image does not meet the perfect requirement. At the moment, the electronic equipment acquires a second fingerprint image generated in the process of pressing the first fingerprint again through the under-screen fingerprint sensor. The second fingerprint image is pressed the operation in-process by first fingerprint and is gathered again by fingerprint sensor under the screen, that is to say, this application has gathered twice fingerprint image in once pressing the operation in-process, need not to lift the finger and can gather twice fingerprint image.
304, if the image quality of the second fingerprint image is greater than or equal to the first preset threshold, the electronic device records the second fingerprint image.
In the embodiment of the application, when the image quality of the second fingerprint image is greater than or equal to the first preset threshold, it is indicated that the image quality of the second fingerprint image meets the perfect requirement, and the image quality of the second fingerprint image is greater than the image quality of the first fingerprint image, so that the second fingerprint image is recorded. In the process of inputting the fingerprint image, the fingerprint image can be collected twice under the condition that the finger is not lifted, only the fingerprint image with the highest image quality is input, the number of times of pressing the finger in the fingerprint input process is reduced, and the fingerprint input efficiency is improved. In addition, the image quality of the fingerprint image recorded every time is high, so that the success rate of subsequent fingerprint identification can be improved.
Optionally, the embodiment of the present application may further include the following steps:
if the image quality of the first fingerprint image is larger than or equal to a first preset threshold value, the electronic equipment records the first fingerprint image.
In the embodiment of the application, if the image quality of the first fingerprint image is greater than or equal to the first preset threshold, it is indicated that the image quality of the first fingerprint image meets the perfect requirement, that is, the quality of the fingerprint image acquired under the first pressing operation is better, the fingerprint sensor under the screen does not need to acquire the second fingerprint image again under the first pressing operation, the electronic device records the first fingerprint image, the fingerprint image acquisition under the first pressing operation can be completed, the fingerprint image acquisition under the next pressing operation is performed, or the fingerprint recording is finished. The embodiment of the application analyzes the quality of the collected fingerprint image, determines whether to collect the fingerprint image once again after once pressing operation, and can meet the requirements of the collected image quality and save the time length for inputting the fingerprint.
Optionally, before the electronic device acquires the second fingerprint image generated in the process of pressing the first fingerprint again through the under-screen fingerprint sensor, the embodiment of the application may further include the following steps:
(11) the electronic equipment detects a pressure value of the first fingerprint pressing operation, and if the pressure value is not within a preset pressure value interval and the pressure value is smaller than the lower limit of the preset pressure value interval, the electronic equipment outputs prompt information for increasing the pressing degree;
(12) and if the pressure value is not within the preset pressure value interval and the pressure value is greater than the upper limit of the preset pressure value interval, the electronic equipment outputs prompt information for reducing the pressing pressure.
In the embodiment of the application, a pressure sensor can be arranged in the fingerprint acquisition area, and the pressure sensor is used for acquiring the pressure pressed by the finger of the user. For the fingerprint sensor under the optical screen, if the pressing pressure is small, the fingerprint coverage area and the effective fingerprint pixel points of the fingerprint image collected by the fingerprint sensor under the optical screen are small, and the fingerprint sensor under the optical screen can not acquire the fingerprint image with high quality. This application embodiment is assisted through increasing pressure sensor and is carried out the fingerprint and type, and the guide user presses the fingerprint collection region with certain pressing force degree to make fingerprint sensor collection quality higher fingerprint image under the screen.
The preset pressure value interval is preset and can be stored in a memory (nonvolatile memory) of the electronic device.
Optionally, the image quality is determined based on the fingerprint coverage area and the number of effective fingerprint pixels.
In the embodiment of the application, in the process of entering the fingerprint image, the fingerprint image can be collected twice under the condition of not lifting the finger, only the fingerprint image with the highest image quality is entered, the success rate of subsequent fingerprint identification can be improved, and higher false identification rate (FAR) is avoided during the subsequent fingerprint identification.
Referring to fig. 4, fig. 4 is a schematic flowchart of another fingerprint entry method disclosed in an embodiment of the present application, and fig. 4 is obtained by further optimizing on the basis of fig. 3. As shown in fig. 4, the fingerprint entry method includes the following steps.
401, the electronic device detects a first fingerprint pressing operation in a fingerprint collection area of the touch display screen.
402, the electronic device collects a first fingerprint image generated in the process of pressing the first fingerprint through the under-screen fingerprint sensor.
403, if the image quality of the first fingerprint image is smaller than a first preset threshold, the electronic device acquires a second fingerprint image generated in the process of pressing the first fingerprint again through the under-screen fingerprint sensor.
And 404, if the image quality of the second fingerprint image is greater than or equal to a first preset threshold value, the electronic equipment records the second fingerprint image.
The specific implementation of steps 401 to 404 in the embodiment of the present application may refer to steps 301 to 304 shown in fig. 3, which is not described herein again.
And 405, if the image quality of the second fingerprint image is smaller than a first preset threshold, the electronic equipment determines the image with the highest image quality in the first fingerprint image and the second fingerprint image.
And 406, if the image quality of the fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is greater than or equal to a second preset threshold, the electronic device records the image with the highest image quality in the first fingerprint image and the second fingerprint image, and the second preset threshold is smaller than the first preset threshold.
In the embodiment of the application, if the image quality of the second fingerprint image is smaller than the first preset threshold, it indicates that the image quality of both the first fingerprint image and the second fingerprint image is smaller than the first preset threshold, and the image quality of the fingerprint images does not meet the relatively perfect requirement. Because it is more difficult that the image quality of fingerprint image reaches comparatively perfect requirement, this application embodiment sets up the second and presets the threshold value, and the requirement that the more general fingerprint image of quality that first preset threshold value for setting for can accord with. When the image quality of the fingerprint image is between the first preset threshold and the second preset threshold, it is indicated that the fingerprint image cannot meet the perfect requirement, but can meet the general requirement, and the fingerprint image is also selected to be recorded in order not to waste the fingerprint acquisition result of the pressing operation. The difference between the general quality and the perfect quality can be the difference between the number of effective fingerprint pixels of the fingerprint image and the difference between the sizes of the fingerprint coverage areas.
According to the embodiment of the application, when the image quality of the first fingerprint image and the image quality of the second fingerprint image are both smaller than the first preset threshold value, the fingerprint image with the highest fingerprint image quality and the fingerprint image quality larger than the second preset threshold value is selected from the first fingerprint image and the second fingerprint image for inputting, the phenomenon that the number of times of inputting the fingerprint is too many due to the fact that only the high-quality fingerprint image is input at each time can be avoided, and the fingerprint inputting time is too long.
Optionally, the embodiment of the present application may further include the following steps:
and if the image quality of the fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is smaller than a second preset threshold value, the electronic equipment outputs prompt information of input failure, and the prompt information is used for prompting the user to perform pressing operation again.
In the embodiment of the application, if the image quality of the fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is smaller than a second preset threshold, it is indicated that the first fingerprint image and the second fingerprint image cannot meet the minimum requirement for fingerprint image entry, so that the fingerprint image entry is abandoned, and the user is prompted to perform pressing operation again. The image quality of the fingerprint image is lower than the second preset threshold, which may be that the fingerprint image is blurry. For example, for an optical underscreen fingerprint sensor, the currently required time for fingerprint acquisition by the optical underscreen fingerprint sensor is generally high, and usually needs more than 150ms, and it is found in an actual test that, in the recording of a fingerprint image, even if a finger is lifted immediately after the acquisition action is completed, the actually formed fingerprint image may be relatively blurred, and the minimum requirement is difficult to achieve.
Optionally, the embodiment of the present application may further include the following steps:
(21) if the image quality of N fingerprint images continuously acquired by the fingerprint sensor under the screen is lower than a second preset threshold, the electronic equipment starts a camera to acquire face information, wherein N is an integer greater than or equal to 2;
(22) the electronic equipment verifies whether the face information is matched with a prestored face template;
(23) and if not, the electronic equipment exits the fingerprint input mode and enters a screen locking mode.
In the embodiment of the application, if the image quality of the N fingerprint images continuously collected by the fingerprint sensor under the screen is lower than the second preset threshold, the condition that the fingerprint input mode is mistakenly entered by a child is possible, if the user is continuously reminded to input again, the power consumption of the fingerprint input process is higher, and the power consumption of the electronic equipment can be possibly caused. The embodiment of the application provides a scheme for distinguishing whether the input is error input. The electronic equipment can open the camera under the condition that the image quality of the N fingerprint images that fingerprint sensor gathered in succession all is less than the preset threshold value of second under the screen, gather face information to compare the face information of gathering with the face template of prestoring, if mismatch, then electronic equipment withdraws from the fingerprint and types the mode, gets into the lock screen mode. The screen locking mode is a mode in which the screen is locked. Under the screen locking mode, because the system has exited the fingerprint input mode, can prevent that child from reentering the fingerprint input mode to can save electronic equipment's electric quantity.
In the embodiment of the application, in the process of inputting the fingerprint image, the fingerprint image can be collected twice under the condition of not lifting the finger, only the fingerprint image with the highest image quality is input, and the success rate of subsequent fingerprint identification can be improved.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiment of the present application, the electronic device may be divided into the functional units according to the method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
Please refer to fig. 5, fig. 5 is a schematic structural diagram of a fingerprint input device according to an embodiment of the present application. This fingerprint is typeeed device and is applied to the electronic equipment including fingerprint sensor under touch-control display screen, the screen, and touch-control display screen includes fingerprint acquisition region, and fingerprint sensor is located the regional below of fingerprint acquisition under the screen, as shown in fig. 5, this fingerprint is typeeed device 500 and is included detecting element 501, acquisition unit 502 and type unit 503, wherein:
the detection unit 501 is configured to detect a first fingerprint pressing operation in a fingerprint collection area of the touch display screen;
the acquisition unit 502 is used for acquiring a first fingerprint image generated in the first fingerprint pressing operation process through an under-screen fingerprint sensor;
the acquiring unit 502 is further configured to acquire a second fingerprint image generated in the first fingerprint pressing operation process again through the under-screen fingerprint sensor when the image quality of the first fingerprint image is smaller than a first preset threshold;
the entry unit 503 is configured to enter the second fingerprint image when the image quality of the second fingerprint image is greater than or equal to the first preset threshold.
Optionally, the fingerprint entry device 500 may further comprise a determination unit 504.
The determining unit 504 is configured to determine, when the image quality of the second fingerprint image is smaller than the first preset threshold, an image with the highest image quality in the first fingerprint image and the second fingerprint image;
the entry unit 503 is further configured to, when the image quality of a fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is greater than or equal to a second preset threshold, enter an image with the highest image quality in the first fingerprint image and the second fingerprint image, where the second preset threshold is smaller than the first preset threshold.
Optionally, the fingerprint input device 500 may further include an output unit 505.
An output unit 505, configured to output a prompt message indicating that entry fails when the image quality of a fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is less than a second preset threshold, where the prompt message is used to prompt a user to perform a pressing operation again.
Optionally, the fingerprint input device 500 may further include an enabling unit 506, a verification unit 507, and a processing unit 508, where:
the starting unit 506 is configured to start the camera and collect face information when image quality of N fingerprint images continuously collected by the underscreen fingerprint sensor is lower than the second preset threshold, where N is an integer greater than or equal to 2;
a verification unit 507, configured to verify whether the face information matches a pre-stored face template;
and the processing unit 508 is configured to exit the fingerprint entry mode and enter the screen locking mode when the verification unit 507 verifies that the face information is not matched with the pre-stored face template.
Optionally, the entry unit 503 is further configured to enter the first fingerprint image when the image quality of the first fingerprint image is greater than or equal to the first preset threshold.
Optionally, the detecting unit 501 is further configured to detect a pressure value of the first fingerprint pressing operation before the acquiring unit 502 acquires the second fingerprint image generated in the first fingerprint pressing operation process again through the under-screen fingerprint sensor;
the output unit 505 is further configured to output prompt information for increasing the pressing degree when the pressure value is not within the preset pressure value interval and the pressure value is smaller than the lower limit of the preset pressure value interval;
the output unit 505 is further configured to output prompt information for reducing the pressing force degree when the pressure value is not within the preset pressure value interval and the pressure value is greater than the upper limit of the preset pressure value interval.
Optionally, the image quality is determined based on the fingerprint coverage area and the number of effective fingerprint pixels.
The detecting unit 501 and the output unit 505 may be touch display screens in electronic devices, the collecting unit 502 may be an off-screen fingerprint sensor in the electronic devices, and the entering unit 503, the determining unit 504, the starting unit 505, the verifying unit 506, and the processing unit 508 may be processors in the electronic devices.
By implementing the fingerprint input device shown in fig. 5, in the process of inputting the fingerprint image, the fingerprint image can be acquired twice without lifting the finger, only the fingerprint image with the highest image quality is input, and the success rate of subsequent fingerprint identification can be improved.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application. As shown in fig. 6, the electronic device 600 includes a processor 601 and a memory 602, wherein the electronic device 600 may further include a bus 603, the processor 601 and the memory 602 may be connected to each other through the bus 603, and the bus 603 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 603 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus. The electronic device 600 may further include an input/output device 604, and the input/output device 604 may include a touch display screen, such as a liquid crystal display screen, an OLED display screen, and the like. The memory 602 is used to store one or more programs containing instructions; processor 601 is configured to invoke instructions stored in memory 602 to perform some or all of the method steps described above in fig. 3-4.
By implementing the electronic device shown in fig. 6, in the process of inputting the fingerprint image, the fingerprint image can be acquired twice without lifting the finger, only the fingerprint image with the highest image quality is input, and the success rate of subsequent fingerprint identification can be improved.
Embodiments of the present application also provide a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the fingerprint entry methods as recited in the above method embodiments.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any of the fingerprint entry methods as recited in the above method embodiments.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The foregoing embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A fingerprint entry method, comprising:
detecting a first fingerprint pressing operation in a fingerprint acquisition area of a touch display screen;
acquiring a first fingerprint image generated in the first fingerprint pressing operation process through a fingerprint sensor under a screen;
if the image quality of the first fingerprint image is smaller than a first preset threshold value, a second fingerprint image generated in the first fingerprint pressing operation process is collected again through the under-screen fingerprint sensor;
if the image quality of the second fingerprint image is greater than or equal to the first preset threshold value, recording the second fingerprint image;
if the image quality of N fingerprint images continuously acquired by the under-screen fingerprint sensor is lower than a second preset threshold value, starting a camera to acquire face information, wherein the second preset threshold value is smaller than the first preset threshold value, and N is an integer greater than or equal to 2;
verifying whether the face information is matched with a prestored face template;
if not, the fingerprint input mode is exited, and the screen locking mode is entered.
2. The method of claim 1, further comprising:
if the image quality of the second fingerprint image is smaller than the first preset threshold value, determining an image with the highest image quality in the first fingerprint image and the second fingerprint image;
and if the image quality of the fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is greater than or equal to a second preset threshold value, recording the image with the highest image quality in the first fingerprint image and the second fingerprint image.
3. The method of claim 2, further comprising:
and if the image quality of the fingerprint image with the highest image quality in the first fingerprint image and the second fingerprint image is smaller than a second preset threshold value, outputting prompt information of input failure, wherein the prompt information is used for prompting a user to perform pressing operation again.
4. The method according to any one of claims 1 to 3, further comprising:
and if the image quality of the first fingerprint image is greater than or equal to the first preset threshold value, recording the first fingerprint image.
5. The method according to any one of claims 1 to 3, wherein before the re-acquiring, by the off-screen fingerprint sensor, the second fingerprint image generated during the first fingerprint pressing operation, the method further comprises:
detecting a pressure value of the first fingerprint pressing operation, and if the pressure value is not within a preset pressure value interval and the pressure value is smaller than the lower limit of the preset pressure value interval, outputting prompt information for increasing the pressing degree;
and if the pressure value is not within the preset pressure value interval and the pressure value is greater than the upper limit of the preset pressure value interval, outputting prompt information for reducing the pressing degree.
6. The method according to any one of claims 1 to 3, wherein the image quality is determined based on a fingerprint coverage area and a number of valid fingerprint pixels.
7. The utility model provides a fingerprint type device, its characterized in that, the electronic equipment who includes touch-control display screen, fingerprint sensor under the screen is applied to the device, the touch-control display screen includes fingerprint collection area, fingerprint sensor is used for gathering under the screen fingerprint image in the fingerprint collection area, the device includes:
the detection unit is used for detecting a first fingerprint pressing operation in a fingerprint acquisition area of the touch display screen;
the acquisition unit is used for acquiring a first fingerprint image generated in the first fingerprint pressing operation process through the under-screen fingerprint sensor;
the acquisition unit is further used for acquiring a second fingerprint image generated in the first fingerprint pressing operation process again through the under-screen fingerprint sensor under the condition that the image quality of the first fingerprint image is smaller than a first preset threshold;
the recording unit is used for recording the second fingerprint image under the condition that the image quality of the second fingerprint image is greater than or equal to the first preset threshold value;
the starting unit is used for starting the camera and collecting face information under the condition that the image quality of N fingerprint images continuously collected by the fingerprint sensor under the screen is lower than a second preset threshold value, wherein the second preset threshold value is smaller than the first preset threshold value, and N is an integer greater than or equal to 2;
the verification unit is used for verifying whether the face information is matched with a prestored face template;
and the processing unit is used for exiting the fingerprint input mode and entering the screen locking mode under the condition that the verification unit verifies that the face information is not matched with the pre-stored face template.
8. An electronic device comprising a touch display screen, an off-screen fingerprint sensor, a processor, and a memory for storing one or more programs configured for execution by the processor, the programs comprising instructions for performing the method of any of claims 1-6.
9. A computer-readable storage medium for storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1 to 6.
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| CN110309776A (en) * | 2019-06-29 | 2019-10-08 | Oppo广东移动通信有限公司 | Fingerprint template input method and Related product |
| CN110287922B (en) * | 2019-06-29 | 2021-05-07 | Oppo广东移动通信有限公司 | Fingerprint identification method and related product |
| CN110378263B (en) * | 2019-07-08 | 2021-07-13 | Oppo广东移动通信有限公司 | Fingerprint identification method and related product |
| CN110348425B (en) * | 2019-07-19 | 2020-06-05 | 北京迈格威科技有限公司 | Method, device and equipment for removing shading and computer readable storage medium |
| CN110503026B (en) * | 2019-08-19 | 2022-03-22 | Oppo（重庆）智能科技有限公司 | Fingerprint data calibration method and device based on fingerprint mold pressing detection system |
| CN111222490A (en) * | 2020-01-17 | 2020-06-02 | 盛视科技股份有限公司 | System for testing fingerprint identification |
| CN111310620A (en) * | 2020-02-04 | 2020-06-19 | 北京集创北方科技股份有限公司 | Biological characteristic detection method and detection device, electronic equipment and readable storage medium |
| CN111612935B (en) * | 2020-05-22 | 2022-05-17 | Oppo（重庆）智能科技有限公司 | Method for testing fingerprint under screen |
| CN112580556A (en) * | 2020-12-25 | 2021-03-30 | 北京集创北方科技股份有限公司 | Optical fingerprint acquisition method and device, electronic equipment and storage medium |
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